Inner tube.



V. SHAVITCH.

INNER TUBE.

APPLICATION FILED AUGJO |917.

Patented June 18, 1918.

WITNESS ATTORNEY UNITED sTATEs PATENT oEEIcE.

vtaumm snavrrcn, or CARMEL, canmonma.

INNER TUBE;

To all whom t may concern Be it known that I, VLADIMIR SHAVITCH, a citizen of the United States, residing at Carmel-by-the-Sea, in the county of Monterey and State of California, have invented new and useful Improvements in Inner Tubes, of which the following is a specification.

This invention relates to an inner tube for pneumatic tires.

An object of the invention is to produce an inner tube for tire casings comprising any desired number of cells or air compartments having means for simultaneously inl Hating all of the compartments but providing valves for closing all of the compartments, so that should one or more of the compartments become deflated by uneture or from other causes, the outer an inflated i compartments will not be interfered with.

partments, each of the so seated, means being secured to the connecting means for simultaneously unseating all of the valves to permit of the inflation of all of the compartments.

It is a further object of the invention to produce an inner tube embodying a plurality of independent air cells or compartments, in which injury to one of the said y cells or compartments will not interfere with the remaimng cells or compartments, 1n

' 40 which the construction shall be of a comparativel simple nature, cheap to manufacture, an thoroughly efficient for the purpose desi ed.

Other o jects and advantages will ap ear lilllly 45 as the nature of the invention is more understood, reference being had to the accompanying drawings, in which,

F1 re 1 is an approximately central lonlgitu inal sectional vview through an inner 5o tube constructed in accordance with the present invention.

Fi 2 is a detail sectional view illustrating t e manner of unseating the valves of the separate compartments of the tube, when i the tube is to be inflated Speeioationof Letters Patent.

Fig. 3 is a transverse sectional view ap- -proximatelyon the line 3-3 ofFi The improved inner tube is broadly indicated by the numeral 5, and may be. of the ordinary rubber construction. The tube is interiorly formed with aplurality -of transverse partitions 6, whereby the said tube is divided into any desired number of air cells or compartments 7. The partitions may be of any material ybest suited for the pur ose devised, such for instance, as a rubber fa ric and one of the partitions, indicated for distinction by the numeral 83is preferably, but not necessarily of a greater strength or rigidity than the remaining partitions 6. Each of the partitions is provided with an opening 9, and preferabl the said opening is reinforced by a metaliic sleeve or collar 10, the ends of the same being flanged so as to contact With the outer faces of the partitions 6. Passing through the collar 10 Patented June 18, 1918.

. Application led August 10, 1917. Serial No. 185,535'.

are the stems 11 of valves 12. Preferably f both the stems and the valves are of metal, but the inner or contacting faces of the said valves 12 have arranged thereon, a compressble disk 13 which, when contacting With the flange of the collars will compress to prevent the escape of air 4between the valve and seat. The partition4 8, upon its opposite sides has secured thereon eye members 14 receiving the end convolutions-,of s rings 15-15, and to the opposite ends of t e said springs 15 are secured `Wires or other fiexible elements 16 which are also connected with the stems of the valves nearest the said springs. In a like manner, the outer ends of the valves are provided with eyes 17, between the said eyes and the stem of the adjacent valve is secured a iexible element or Wire 18,v in this manner all of the valves are connected. A,The compartment 7 diametrically o posite the partition 8 is provided with t e usual spring pressedvalve in the nature-of a plunger 19, and to which the inflating pipe is connected. This plunger valve 19 upon its inner end is provided with oplpositely extending arms having eyes 20 an to these e es are secured the end exible elements 21 o the valves closing the openings or valve seats in the partitions of the said end compartment 7. By reference to the drawings, it will be noted that the valves are arranged in opposite directions, which for the sake of distinction are indicated by the numerals 22 and also that the f the valves when the member 18 is forced inwardly against the springs. When pressure of the member 18 is relieved, the springs 15 exerting a pressure in an opposite direction, will pull upon the connecting elements 16 secured directly to the said springs to draw the valves connected by the said elements 16 diametrically upon their seats and by virtue ofthe connecting element 18 between the remaining valves all of the latter will be positivelyseated. v

From the foregoing description, when taken in connection with the accompanying drawings, the simplicity and advantages of the construction will be apparent, it is thought, without further detailed description.

Having thus described the invention, what I claim is:

1. A pneumatic tube having a plurality of spaced partitions therein dividing the said tube into independent compartments, -each of said compartments having an opening, a` valve for theopening, connecting means be-k tween the valves, spring means between certain of the connectmg means and one of the partitions for normally seating all of the valves, an inflating valve in one of the compartments, a sprlng pressed plunger arranged through the said valve, and connecting means between the said plunger and the valves opposite thereto.

2. A pneumatic tube having spaced inner partitions dividing the said tube into a plurality of air compartments, each of said `compartments having an opening, a metallic valve and connected to the lexible cement of the valves in the said compartment.

In testimony whereof I afi-ix my signature.

VLADiR sHAvrrcH.

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